APA (7th ed.) Citation

Eckersley, C. E., & Eckersley, J. M. (1973). A comprehensive English grammar for foreign students (New imp.). Longman.

Chicago Style (17th ed.) Citation

Eckersley, C. E., and J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. New imp. London: Longman, 1973.

MLA (9th ed.) Citation

Eckersley, C. E., and J. M. Eckersley. A Comprehensive English Grammar for Foreign Students. New imp. Longman, 1973.